Improved mold for glass lamps



To all whom it may concern:

einem sala stent ottime.

Letters Patent N 104,205,1ZatczlJQnw 14, 1870.

- IMPROVED MOLD FOR GLASS LAMPS.

The Schedule referred to in these Letters Patent and making part of the same Be it known that I, DANIEL C. RIPLEY, of the borough of Birmingham, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Glass-Lamp Mold; and I do hereby declare the following to be a full, clear, and exact description thereof, reference beinghad to the accompanying drawing making a part ot' this specification, in which- Figure 1 is a view, in perspective, of the inside of my improved mold;

Figure 2 is Aan inside view, in elevation, ot' one-half of the mold; and

Figure 3 is a perspective view ot one form of cen ter-picce which 1 use in connection with my improved mold in the manufacture of double -bowled glass lamps.

vLike letters Iof reference indicate like parts in cach.

-The nature ol' my invention consists in the const-rnction of a mold having a central cavity for the insertion of a center-piece, stock, or'stem,`aud two or .more side communicating cavities, in which to blow simultaneously onto such center-piece, stock, or stem a oorresponding numbei' of lamp-bowls.

10 enable others skilled in the art to make and use my invention, I will proceed to describe its construction and mode of operation.

My improved mold is .ofthe class commonly known as a divided or two-part mold.

The opposite halves a a of the body are made in the usual" way, as likewise the opposite halves b b of the upper part, through the cavities s s of which the blowing is done, and in which cavities the necks are formed.

At ornear the middle of the mold, and in each half, I make a cavity, c, of the size and form to receive a center-piece, l, which is previously made of glass by being pressed in a suitable mold.

This center-piece' may be of any desired form. It may be an ordinary lamp-peg,oi have a match-box, d', pressed in it. It should, however, have side flanges, c, to a number equal to the lamp-bowls desiredand correspondingly arranged, such anges projecting far enough, so that their outer edges shall, when the center-piece is inserted in its cavity, as in iigs. 1 and 2, be

flush with the faces of the bowlcavities ff', which lat# ter are made in any desired number in theplaue of part, or division ot the bodyof the mold, and around the central cavity c, and areof the sizeand shape desired in the lamp-bowls to bei'made.

.The molds being thus constructed, the body part a a is closed together and fastened in any convenient way, the center-piece, stock, or stem-d rst'being inserted in its cavity c, as described. llwov blowers then gather on the ends of their pnnty-rods each an amount ot' melted glass to lform a lamp-bowl ot' the size desired, insert the same in the cavities ff', and, as soon as the upper hinged parts 'b b' are closed together, proceed to blow simultaneously a glass lampbowl in each said cavity onto each flange e, the melted glass of the one and the solid glass ofthe other readv ily uniting to forni a tirm and durable union. As soon as the glass is set, the mold is opened,.the lamp removed, and the workcontinued.

The lamp thus produced maybe finished up in any of the ways known to the art. f

By the use of a three-part instead'of a twopart mold, with a stein-cavity in the center, and a bowl-cavity in each partz or plane 'of divisiona three-bo`wled lamp may be produced in like manner.

Instead of intel-posing a center-piecebetween the bowl-cavities, such cavities may be arranged close to gether, and open into each other, so that, in the operation of blowing, each bowl shall be Ablown onto or against the other, and then any suitable mode of mounting the lamp-boivls may be adopted.

That Iclaim as my invention, and'desire to secure by Letters Patent, is-

A lamp-,mold having two or more cavities, vlj'conv munica'ting with each other, either directlyor through an interposed cent-ral cavity, in which to blow two oi'A morelamp-bowls by distinct though simultaneous o erations, substantially as described.

In testimony whereof, I, the said DANIEL C. Rrr'- LEY, have hereunto set myhand.

- DANIEL C...l RIPLEY.

fitnesses G. NV. RANKIN, G. H. CHRIsTY. 

